Optical smoke detector MSD 523

2-wiresurfacewith alarm

• Operating voltage: 18 V DC to 30 V DC • Detection criterion: current increase, 2-wire technology • Monitoring area: max. 120 m² • Mounting height: max. 16 m • Perm. air velocity: max. 20 m/s • Current consumption: at rest max. 120 μA, at alarm min. 19 mA, max. 22.5 mA • Ambient temperature: -25 °C to +60 °C • VdS approval: G 207123 Note: The maximum monitoring area and mounting height of the room to be monitored depends on the roof pitch and the horizontal distance between the detectors according to EN DIN 54-7 for smoke detectors. Detector base USB 502-6 For the universal heat detector UTD 523 and the light-optical smoke detector MSD 523 for surface mounting. Technical data • Wire cross-section: max. 2.5 mm² • Dimensions: Ø 118.5 mm • Protection class: IP 44 according to DIN EN 60 529 • Housing: ABS/PC, FR 90 • Color: white